SN and I were watching TV two nights ago when we heard a strange sound coming from the living room. It was Biscuit . She was on her side, yelping nonstop with her eyes wide open, foaming at the mouth. The foam had soaked all the way through her bed. Panicked, we tried to revive her, but she was like a zombie, just stuck on her side and barking, staring at nothing. It seemed like this went on forever, but I think it was probably about 3 minutes. When Biscuit finally came to, she tried to stand but kept falling over. She didn't seem to know where she was or even who we were. She was growling at us. Finally, we got her calmed down and resting, but she would occasionally let out a yowl, eyes closed. We couldn't tell if she was having a nightmare or was in pain. Later, it was like her mind was gone - she could walk, but only in circles around the perimeter of the room. She was not responding to anything we said or did. She still seemed not to know us....